Prometheus and Pandora - Saturn's Moons Slideshow

Let's a take a closer look at the shepherd moons Prometheus (left) and Pandora (right). Between the moons you can see the icy particles that make up Saturn's F ring. While it may be difficult to see, Pandora's orbit is outside of the ring and closer to the Cassini spacecraft. Both moons are uneven shapes and covered with impact craters.

Prometheus pulls material out of the F ring when it is farthest from Saturn in its orbit. The ring has waves because of Prometheus' gravity pulling on the ice particles. The gravity of both moons keeps ice particles in the ring and a distinct gap in series of Saturn's rings.